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- Xref: sparky comp.sys.sun.admin:9605 comp.sys.sun.hardware:6382
- Path: sparky!uunet!portal!cup.portal.com!thad
- From: thad@cup.portal.com (Thad P Floryan)
- Newsgroups: comp.sys.sun.admin,comp.sys.sun.hardware
- Subject: Re: eeprom bootdev (Sun 3/60, Sunos 4.1.1)
- Message-ID: <72006@cup.portal.com>
- Date: Fri, 18 Dec 92 23:35:32 PST
- Organization: The Portal System (TM)
- Distribution: world
- References: <1992Dec19.020607.24753@mlfarm.com>
- Lines: 46
-
- In article <1992Dec19.020607.24753@mlfarm.com>
- ron@mlfarm.com (Ronald Florence) writes:
-
- | One of our Sun 3/60s developed a bad simm in the first 4mb of memory.
- | [...] do not have the hardware manuals for this machine. Is there another
- | way to reset the bootdev from its current setting of (0,0,0) so the
- | machine will auto-boot off the ethernet? Thanks.
-
- Assuming your boot EPROM (the 27C512) is version 1.6, 1.9 or 3.0.1, then
- the following will work once you're in the ROM monitor (either by having
- done a "halt" from SunOS or by L1-A during the initial powerup):
-
- you want to set the EEPROM location 0x18 to be 0x12 (to force the EEPROM
- specified boot device), and locations 0x19 thru 0x1D to be the "name" of
- the boot device.
-
- Thus, for "le(0,0,0)" the EEPROM contents should be:
-
- 0x18/ 0x12
- 0x19/ 0x6C ASCII code for "l"
- 0x1A/ 0x65 ASCII code for "e"
- 0x1B/ 0
- 0x1C/ 0
- 0x1D/ 0
-
- Though the following example might not precisely mimic the actual dialog,
- the commands are correct (from the boot ROM) (where "XX" means whatever the
- current value is):
-
- >q 18
- 18 XX 12
- 19 XX 6C
- 1A XX 65
- 1B XX 0
- 1C XX 0
- 1D XX 0
- 1E XX (now type a space and a RETURN), then "k 2" for a full reset and boot
-
- You will type the new values (above) immediately followed by a RETURN to
- advance to the next EEPROM location.
-
- I just did this for some 20+ 3/60 converted to be Xterminals (with Xkernel)
- and it works just fine.
-
-
- Thad Floryan [ thad@btr.com, thad@cup.portal.com ]
-